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From:   Srujana Challa <schalla@marvell.com>
To:     <herbert@gondor.apana.org.au>, <davem@davemloft.net>
CC:     <linux-crypto@vger.kernel.org>, <netdev@vger.kernel.org>,
        <linux-doc@vger.kernel.org>, <bbrezillon@kernel.org>,
        <arno@natisbad.org>, <kuba@kernel.org>, <ndabilpuram@marvell.com>,
        <sgoutham@marvell.com>, <schalla@marvell.com>
Subject: [PATCH v1 09/10] crypto/octeontx2: register error interrupts for inline cptlf
Date:   Fri, 3 Nov 2023 11:03:05 +0530
Message-ID: <20231103053306.2259753-10-schalla@marvell.com>
In-Reply-To: <20231103053306.2259753-1-schalla@marvell.com>
References: <20231103053306.2259753-1-schalla@marvell.com>
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From: Nithin Dabilpuram <ndabilpuram@marvell.com>

Register errors interrupts for inline cptlf attached to PF driver
so that SMMU faults and other errors can be reported.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 drivers/crypto/marvell/octeontx2/otx2_cptlf.c | 98 ++++++++++++-------
 drivers/crypto/marvell/octeontx2/otx2_cptlf.h |  6 +-
 drivers/crypto/marvell/octeontx2/otx2_cptpf.h |  4 +
 .../marvell/octeontx2/otx2_cptpf_main.c       | 17 +++-
 .../marvell/octeontx2/otx2_cptpf_mbox.c       | 67 +++++++++++--
 .../marvell/octeontx2/otx2_cptvf_main.c       | 12 ++-
 6 files changed, 149 insertions(+), 55 deletions(-)

diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptlf.c b/drivers/crypto/marvell/octeontx2/otx2_cptlf.c
index 6edd27ff8c4e..d7805e672047 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptlf.c
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptlf.c
@@ -151,26 +151,13 @@ static void cptlf_set_misc_intrs(struct otx2_cptlfs_info *lfs, u8 enable)
 				 irq_misc.u);
 }
 
-static void cptlf_enable_intrs(struct otx2_cptlfs_info *lfs)
+static void cptlf_set_done_intrs(struct otx2_cptlfs_info *lfs, u8 enable)
 {
+	u64 reg = enable ? OTX2_CPT_LF_DONE_INT_ENA_W1S : OTX2_CPT_LF_DONE_INT_ENA_W1C;
 	int slot;
 
-	/* Enable done interrupts */
 	for (slot = 0; slot < lfs->lfs_num; slot++)
-		otx2_cpt_write64(lfs->reg_base, lfs->blkaddr, slot,
-				 OTX2_CPT_LF_DONE_INT_ENA_W1S, 0x1);
-	/* Enable Misc interrupts */
-	cptlf_set_misc_intrs(lfs, true);
-}
-
-static void cptlf_disable_intrs(struct otx2_cptlfs_info *lfs)
-{
-	int slot;
-
-	for (slot = 0; slot < lfs->lfs_num; slot++)
-		otx2_cpt_write64(lfs->reg_base, lfs->blkaddr, slot,
-				 OTX2_CPT_LF_DONE_INT_ENA_W1C, 0x1);
-	cptlf_set_misc_intrs(lfs, false);
+		otx2_cpt_write64(lfs->reg_base, lfs->blkaddr, slot, reg, 0x1);
 }
 
 static inline int cptlf_read_done_cnt(struct otx2_cptlf_info *lf)
@@ -257,24 +244,44 @@ static irqreturn_t cptlf_done_intr_handler(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-void otx2_cptlf_unregister_interrupts(struct otx2_cptlfs_info *lfs)
+void otx2_cptlf_unregister_misc_interrupts(struct otx2_cptlfs_info *lfs)
 {
-	int i, offs, vector;
+	int i, irq_offs, vector;
 
+	irq_offs = OTX2_CPT_LF_INT_VEC_E_MISC;
 	for (i = 0; i < lfs->lfs_num; i++) {
-		for (offs = 0; offs < OTX2_CPT_LF_MSIX_VECTORS; offs++) {
-			if (!lfs->lf[i].is_irq_reg[offs])
-				continue;
+		if (!lfs->lf[i].is_irq_reg[irq_offs])
+			continue;
 
-			vector = pci_irq_vector(lfs->pdev,
-						lfs->lf[i].msix_offset + offs);
-			free_irq(vector, &lfs->lf[i]);
-			lfs->lf[i].is_irq_reg[offs] = false;
-		}
+		vector = pci_irq_vector(lfs->pdev,
+					lfs->lf[i].msix_offset + irq_offs);
+		free_irq(vector, &lfs->lf[i]);
+		lfs->lf[i].is_irq_reg[irq_offs] = false;
+	}
+
+	cptlf_set_misc_intrs(lfs, false);
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_unregister_misc_interrupts,
+		     CRYPTO_DEV_OCTEONTX2_CPT);
+
+void otx2_cptlf_unregister_done_interrupts(struct otx2_cptlfs_info *lfs)
+{
+	int i, irq_offs, vector;
+
+	irq_offs = OTX2_CPT_LF_INT_VEC_E_DONE;
+	for (i = 0; i < lfs->lfs_num; i++) {
+		if (!lfs->lf[i].is_irq_reg[irq_offs])
+			continue;
+
+		vector = pci_irq_vector(lfs->pdev,
+					lfs->lf[i].msix_offset + irq_offs);
+		free_irq(vector, &lfs->lf[i]);
+		lfs->lf[i].is_irq_reg[irq_offs] = false;
 	}
-	cptlf_disable_intrs(lfs);
+
+	cptlf_set_done_intrs(lfs, false);
 }
-EXPORT_SYMBOL_NS_GPL(otx2_cptlf_unregister_interrupts,
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_unregister_done_interrupts,
 		     CRYPTO_DEV_OCTEONTX2_CPT);
 
 static int cptlf_do_register_interrrupts(struct otx2_cptlfs_info *lfs,
@@ -296,34 +303,51 @@ static int cptlf_do_register_interrrupts(struct otx2_cptlfs_info *lfs,
 	return ret;
 }
 
-int otx2_cptlf_register_interrupts(struct otx2_cptlfs_info *lfs)
+int otx2_cptlf_register_misc_interrupts(struct otx2_cptlfs_info *lfs)
 {
+	bool is_cpt1 = (lfs->blkaddr == BLKADDR_CPT1);
 	int irq_offs, ret, i;
 
+	irq_offs = OTX2_CPT_LF_INT_VEC_E_MISC;
 	for (i = 0; i < lfs->lfs_num; i++) {
-		irq_offs = OTX2_CPT_LF_INT_VEC_E_MISC;
-		snprintf(lfs->lf[i].irq_name[irq_offs], 32, "CPTLF Misc%d", i);
+		snprintf(lfs->lf[i].irq_name[irq_offs], 32, "CPT%dLF Misc%d",
+			 is_cpt1, i);
 		ret = cptlf_do_register_interrrupts(lfs, i, irq_offs,
 						    cptlf_misc_intr_handler);
 		if (ret)
 			goto free_irq;
+	}
+	cptlf_set_misc_intrs(lfs, true);
+	return 0;
 
-		irq_offs = OTX2_CPT_LF_INT_VEC_E_DONE;
-		snprintf(lfs->lf[i].irq_name[irq_offs], 32, "OTX2_CPTLF Done%d",
-			 i);
+free_irq:
+	otx2_cptlf_unregister_misc_interrupts(lfs);
+	return ret;
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_register_misc_interrupts, CRYPTO_DEV_OCTEONTX2_CPT);
+
+int otx2_cptlf_register_done_interrupts(struct otx2_cptlfs_info *lfs)
+{
+	bool is_cpt1 = (lfs->blkaddr == BLKADDR_CPT1);
+	int irq_offs, ret, i;
+
+	irq_offs = OTX2_CPT_LF_INT_VEC_E_DONE;
+	for (i = 0; i < lfs->lfs_num; i++) {
+		snprintf(lfs->lf[i].irq_name[irq_offs], 32,
+			 "OTX2_CPT%dLF Done%d", is_cpt1, i);
 		ret = cptlf_do_register_interrrupts(lfs, i, irq_offs,
 						    cptlf_done_intr_handler);
 		if (ret)
 			goto free_irq;
 	}
-	cptlf_enable_intrs(lfs);
+	cptlf_set_done_intrs(lfs, true);
 	return 0;
 
 free_irq:
-	otx2_cptlf_unregister_interrupts(lfs);
+	otx2_cptlf_unregister_done_interrupts(lfs);
 	return ret;
 }
-EXPORT_SYMBOL_NS_GPL(otx2_cptlf_register_interrupts, CRYPTO_DEV_OCTEONTX2_CPT);
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_register_done_interrupts, CRYPTO_DEV_OCTEONTX2_CPT);
 
 void otx2_cptlf_free_irqs_affinity(struct otx2_cptlfs_info *lfs)
 {
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptlf.h b/drivers/crypto/marvell/octeontx2/otx2_cptlf.h
index 4ce24aa1e941..f6138da945e9 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptlf.h
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptlf.h
@@ -409,8 +409,10 @@ static inline void otx2_cptlf_set_dev_info(struct otx2_cptlfs_info *lfs,
 int otx2_cptlf_init(struct otx2_cptlfs_info *lfs, u8 eng_grp_msk, int pri,
 		    int lfs_num);
 void otx2_cptlf_shutdown(struct otx2_cptlfs_info *lfs);
-int otx2_cptlf_register_interrupts(struct otx2_cptlfs_info *lfs);
-void otx2_cptlf_unregister_interrupts(struct otx2_cptlfs_info *lfs);
+int otx2_cptlf_register_misc_interrupts(struct otx2_cptlfs_info *lfs);
+int otx2_cptlf_register_done_interrupts(struct otx2_cptlfs_info *lfs);
+void otx2_cptlf_unregister_misc_interrupts(struct otx2_cptlfs_info *lfs);
+void otx2_cptlf_unregister_done_interrupts(struct otx2_cptlfs_info *lfs);
 void otx2_cptlf_free_irqs_affinity(struct otx2_cptlfs_info *lfs);
 int otx2_cptlf_set_irqs_affinity(struct otx2_cptlfs_info *lfs);
 
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf.h b/drivers/crypto/marvell/octeontx2/otx2_cptpf.h
index a209ec5af381..e5859a1e1c60 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptpf.h
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf.h
@@ -71,4 +71,8 @@ void otx2_cptpf_afpf_mbox_up_handler(struct work_struct *work);
 irqreturn_t otx2_cptpf_vfpf_mbox_intr(int irq, void *arg);
 void otx2_cptpf_vfpf_mbox_handler(struct work_struct *work);
 
+int otx2_inline_cptlf_setup(struct otx2_cptpf_dev *cptpf,
+			    struct otx2_cptlfs_info *lfs, u8 egrp, int num_lfs);
+void otx2_inline_cptlf_cleanup(struct otx2_cptlfs_info *lfs);
+
 #endif /* __OTX2_CPTPF_H */
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c b/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c
index 7d44b54659bf..79afa3a451a7 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c
@@ -725,7 +725,7 @@ static int otx2_cptpf_probe(struct pci_dev *pdev,
 {
 	struct device *dev = &pdev->dev;
 	struct otx2_cptpf_dev *cptpf;
-	int err;
+	int err, num_vec;
 
 	cptpf = devm_kzalloc(dev, sizeof(*cptpf), GFP_KERNEL);
 	if (!cptpf)
@@ -760,8 +760,11 @@ static int otx2_cptpf_probe(struct pci_dev *pdev,
 	if (err)
 		goto clear_drvdata;
 
-	err = pci_alloc_irq_vectors(pdev, RVU_PF_INT_VEC_CNT,
-				    RVU_PF_INT_VEC_CNT, PCI_IRQ_MSIX);
+	num_vec = pci_msix_vec_count(cptpf->pdev);
+	if (num_vec <= 0)
+		goto clear_drvdata;
+
+	err = pci_alloc_irq_vectors(pdev, num_vec, num_vec, PCI_IRQ_MSIX);
 	if (err < 0) {
 		dev_err(dev, "Request for %d msix vectors failed\n",
 			RVU_PF_INT_VEC_CNT);
@@ -825,6 +828,14 @@ static void otx2_cptpf_remove(struct pci_dev *pdev)
 
 	cptpf_sriov_disable(pdev);
 	otx2_cpt_unregister_dl(cptpf);
+
+	/* Cleanup Inline CPT LF's if attached */
+	if (cptpf->lfs.lfs_num)
+		otx2_inline_cptlf_cleanup(&cptpf->lfs);
+
+	if (cptpf->cpt1_lfs.lfs_num)
+		otx2_inline_cptlf_cleanup(&cptpf->cpt1_lfs);
+
 	/* Delete sysfs entry created for kernel VF limits */
 	sysfs_remove_group(&pdev->dev.kobj, &cptpf_sysfs_group);
 	/* Cleanup engine groups */
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_mbox.c b/drivers/crypto/marvell/octeontx2/otx2_cptpf_mbox.c
index bbabb57b4665..f7cb4ec74153 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptpf_mbox.c
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_mbox.c
@@ -199,6 +199,47 @@ static int rx_inline_ipsec_lf_cfg(struct otx2_cptpf_dev *cptpf, u8 egrp,
 	return send_inline_ipsec_inbound_msg(cptpf, req->sso_pf_func, 0);
 }
 
+int
+otx2_inline_cptlf_setup(struct otx2_cptpf_dev *cptpf,
+			struct otx2_cptlfs_info *lfs, u8 egrp, int num_lfs)
+{
+	int ret;
+
+	ret = otx2_cptlf_init(lfs, 1 << egrp, OTX2_CPT_QUEUE_HI_PRIO, 1);
+	if (ret) {
+		dev_err(&cptpf->pdev->dev,
+			"LF configuration failed for RX inline ipsec.\n");
+		return ret;
+	}
+
+	/* Get msix offsets for attached LFs */
+	ret = otx2_cpt_msix_offset_msg(lfs);
+	if (ret)
+		goto cleanup_lf;
+
+	/* Register for CPT LF Misc interrupts */
+	ret = otx2_cptlf_register_misc_interrupts(lfs);
+	if (ret)
+		goto free_irq;
+
+	return 0;
+free_irq:
+	otx2_cptlf_unregister_misc_interrupts(lfs);
+cleanup_lf:
+	otx2_cptlf_shutdown(lfs);
+	return ret;
+}
+
+void
+otx2_inline_cptlf_cleanup(struct otx2_cptlfs_info *lfs)
+{
+	/* Unregister misc interrupt */
+	otx2_cptlf_unregister_misc_interrupts(lfs);
+
+	/* Cleanup LFs */
+	otx2_cptlf_shutdown(lfs);
+}
+
 static int handle_msg_rx_inline_ipsec_lf_cfg(struct otx2_cptpf_dev *cptpf,
 					     struct mbox_msghdr *req)
 {
@@ -226,11 +267,9 @@ static int handle_msg_rx_inline_ipsec_lf_cfg(struct otx2_cptpf_dev *cptpf,
 	otx2_cptlf_set_dev_info(&cptpf->lfs, cptpf->pdev, cptpf->reg_base,
 				&cptpf->afpf_mbox, BLKADDR_CPT0);
 	cptpf->lfs.global_slot = 0;
-	ret = otx2_cptlf_init(&cptpf->lfs, 1 << egrp, OTX2_CPT_QUEUE_HI_PRIO,
-			      num_lfs);
+	ret = otx2_inline_cptlf_setup(cptpf, &cptpf->lfs, egrp, num_lfs);
 	if (ret) {
-		dev_err(&cptpf->pdev->dev,
-			"LF configuration failed for RX inline ipsec.\n");
+		dev_err(&cptpf->pdev->dev, "Inline CPT0 LF setup failed.\n");
 		return ret;
 	}
 
@@ -240,11 +279,9 @@ static int handle_msg_rx_inline_ipsec_lf_cfg(struct otx2_cptpf_dev *cptpf,
 					cptpf->reg_base, &cptpf->afpf_mbox,
 					BLKADDR_CPT1);
 		cptpf->cpt1_lfs.global_slot = num_lfs;
-		ret = otx2_cptlf_init(&cptpf->cpt1_lfs, 1 << egrp,
-				      OTX2_CPT_QUEUE_HI_PRIO, num_lfs);
+		ret = otx2_inline_cptlf_setup(cptpf, &cptpf->cpt1_lfs, egrp, num_lfs);
 		if (ret) {
-			dev_err(&cptpf->pdev->dev,
-				"LF configuration failed for RX inline ipsec.\n");
+			dev_err(&cptpf->pdev->dev, "Inline CPT1 LF setup failed.\n");
 			goto lf_cleanup;
 		}
 		cptpf->rsrc_req_blkaddr = 0;
@@ -257,9 +294,9 @@ static int handle_msg_rx_inline_ipsec_lf_cfg(struct otx2_cptpf_dev *cptpf,
 	return 0;
 
 lf1_cleanup:
-	otx2_cptlf_shutdown(&cptpf->cpt1_lfs);
+	otx2_inline_cptlf_cleanup(&cptpf->cpt1_lfs);
 lf_cleanup:
-	otx2_cptlf_shutdown(&cptpf->lfs);
+	otx2_inline_cptlf_cleanup(&cptpf->lfs);
 	return ret;
 }
 
@@ -414,6 +451,8 @@ static void process_afpf_mbox_msg(struct otx2_cptpf_dev *cptpf,
 	struct otx2_cptlfs_info *lfs = &cptpf->lfs;
 	struct device *dev = &cptpf->pdev->dev;
 	struct cpt_rd_wr_reg_msg *rsp_rd_wr;
+	struct msix_offset_rsp *rsp_msix;
+	int i;
 
 	if (msg->id >= MBOX_MSG_MAX) {
 		dev_err(dev, "MBOX msg with unknown ID %d\n", msg->id);
@@ -432,6 +471,14 @@ static void process_afpf_mbox_msg(struct otx2_cptpf_dev *cptpf,
 		cptpf->pf_id = (msg->pcifunc >> RVU_PFVF_PF_SHIFT) &
 				RVU_PFVF_PF_MASK;
 		break;
+	case MBOX_MSG_MSIX_OFFSET:
+		rsp_msix = (struct msix_offset_rsp *) msg;
+		for (i = 0; i < rsp_msix->cptlfs; i++)
+			lfs->lf[i].msix_offset = rsp_msix->cptlf_msixoff[i];
+
+		for (i = 0; i < rsp_msix->cpt1_lfs; i++)
+			lfs->lf[i].msix_offset = rsp_msix->cpt1_lf_msixoff[i];
+		break;
 	case MBOX_MSG_CPT_RD_WR_REGISTER:
 		rsp_rd_wr = (struct cpt_rd_wr_reg_msg *)msg;
 		if (msg->rc) {
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptvf_main.c b/drivers/crypto/marvell/octeontx2/otx2_cptvf_main.c
index 5d1e11135c17..83c3fd8e2e57 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptvf_main.c
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptvf_main.c
@@ -246,7 +246,8 @@ static void cptvf_lf_shutdown(struct otx2_cptlfs_info *lfs)
 	/* Unregister crypto algorithms */
 	otx2_cpt_crypto_exit(lfs->pdev, THIS_MODULE);
 	/* Unregister LFs interrupts */
-	otx2_cptlf_unregister_interrupts(lfs);
+	otx2_cptlf_unregister_misc_interrupts(lfs);
+	otx2_cptlf_unregister_done_interrupts(lfs);
 	/* Cleanup LFs software side */
 	lf_sw_cleanup(lfs);
 	/* Send request to detach LFs */
@@ -298,7 +299,11 @@ static int cptvf_lf_init(struct otx2_cptvf_dev *cptvf)
 		goto cleanup_lf;
 
 	/* Register LFs interrupts */
-	ret = otx2_cptlf_register_interrupts(lfs);
+	ret = otx2_cptlf_register_misc_interrupts(lfs);
+	if (ret)
+		goto cleanup_lf_sw;
+
+	ret = otx2_cptlf_register_done_interrupts(lfs);
 	if (ret)
 		goto cleanup_lf_sw;
 
@@ -319,7 +324,8 @@ static int cptvf_lf_init(struct otx2_cptvf_dev *cptvf)
 disable_irqs:
 	otx2_cptlf_free_irqs_affinity(lfs);
 unregister_intr:
-	otx2_cptlf_unregister_interrupts(lfs);
+	otx2_cptlf_unregister_misc_interrupts(lfs);
+	otx2_cptlf_unregister_done_interrupts(lfs);
 cleanup_lf_sw:
 	lf_sw_cleanup(lfs);
 cleanup_lf:
-- 
2.25.1